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bob places an 18-fot ladder 6 feet from the base of his house and leans it up against  the side of his house. find, to the nearest degree, the measure of the angle the bottom of the ladder makes with ground.

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 Jan 20, 2020
 #1
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cos(angle)  =  adjacent / hypotenuse

cos(angle)  =  6/18  

angle  =  cos-1(6/18)  =  71°

 Jan 20, 2020

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